CN-224229254-U - High-pressure stop valve convenient to maintain

Abstract

The utility model provides a easy maintenance's high pressure stop valve, includes valve body, valve clack, valve gap and valve rod, valve gap fixed connection is in the top of valve body, the valve rod runs through and installs valve gap central authorities and its lower extreme stretch into in the inner chamber of valve body, valve clack fixed connection is in the valve rod lower extreme, be provided with in the valve body with valve clack complex disk seat, the hole upper end of disk seat is provided with annular shoulder, just the last pressure of annular shoulder has removable valve seat ring, through the sealed face of valve clack is closely pasted with this valve seat ring and is realized sealedly. According to the utility model, by improving the valve body structure and installing the replaceable valve seat ring, when the contact surface of the valve seat ring and the valve clack is damaged, the valve seat ring can be replaced in time, so that the stop valve can be quickly maintained, and the maintenance cost is low.

Inventors

• FAN XINMING
• WEI DIANJUN
• WANG DAN
• LI ZHIHENG
• YANG XINPING
• Ning Jingyuan

Assignees

• 陕西能源麟北发电有限公司

Dates

Publication Date

20260512

Application Date

20250611

Claims (5)

1. 1. The utility model provides a easy maintenance's high pressure stop valve, includes valve body (1), valve clack (2), valve gap (3) and valve rod (4), valve gap (3) fixed connection is in the top of valve body (1), valve rod (4) run through and install valve gap (3) central authorities and its lower extreme stretches into in the inner chamber of valve body (1), valve clack (2) fixed connection is in valve rod (4) lower extreme, be provided with in valve body (1) with valve clack (2) complex disk seat (5), its characterized in that, the hole upper end of disk seat (5) is provided with annular shoulder (5-1), just press and install removable valve seat ring (5-2) on annular shoulder (5-1), through the sealed face of valve clack (2) with valve seat ring (5-2) closely paste and realize sealedly.
2. 2. The high-pressure stop valve convenient to maintain according to claim 1 is characterized in that an annular groove (2-1) is formed in a sealing surface of the valve clack (2), a sealing ring (2-2) is embedded in the annular groove (2-1), and the sealing ring (2-2) is closely attached to the valve seat ring (5-2) during sealing.
3. 3. The high-pressure stop valve convenient to maintain according to claim 2, wherein the sealing ring (2-2) is made of stellite, and the valve seat ring (5-2) is made of wear-resistant materials.
4. 4. The high-pressure stop valve convenient to maintain according to claim 1 is characterized in that an annular positioning groove (1-1) is formed in the top of the valve body (1), a middle channel gasket (1-2) is arranged at the bottom of the annular positioning groove (1-1), an annular positioning boss (3-1) matched with the annular positioning groove (1-1) is arranged at the lower end of the valve cover (3), and the annular positioning boss (3-1) is embedded into the annular positioning groove (1-1).
5. 5. The high-pressure stop valve convenient to maintain according to claim 1, wherein a packing pressing plate (7) and a packing pressing sleeve (9) are sleeved on the valve rod (4), the packing pressing plate (7) is connected with the valve cover (3) through bolts (8), the packing pressing sleeve (9) is pressed down through the packing pressing plate (7), and sealing packing (10) between the valve rod (4) and the valve cover (3) is compacted.

Description

High-pressure stop valve convenient to maintain Technical Field The utility model relates to the technical field of high-pressure stop valves, in particular to a high-pressure stop valve convenient to maintain. Background The stop valve is a valve which controls the on-off and flow regulation of fluid by the up-and-down movement of the valve clack. When the valve clack moves downwards, the gap between the valve clack and the valve seat gradually becomes smaller until the valve clack and the valve seat are finally tightly attached, so that the passage of fluid is prevented, and when the valve clack moves upwards, the gap gradually increases, and the fluid passes. When the valve clack moves downwards to seal with the valve seat, the clearance between the valve clack and the valve seat gradually decreases, the flushing pressure of the fluid between the valve seat and the valve clack increases rapidly in geometric level, so that the contact surface between the valve seat and the valve clack is damaged, and the consequences of loose sealing and internal leakage of the valve occur. Most of the existing high-temperature and high-pressure drain valves adopt the stop valve with the structure, once the sealing is not tight and the valve is leaked, the equipment in operation cannot be isolated to eliminate defects, and the operation safety of maintainers is threatened. The valve seat and the valve body are of an integrated structure, and the valve seat is maintained. The valve body replacement has long purchase period and high price, and the valve seat maintenance is difficult and has long period. Disclosure of utility model In order to solve the problems in the prior art, the utility model provides the high-pressure stop valve convenient to maintain. The utility model is realized by the following technical scheme that the high-pressure stop valve convenient to maintain comprises a valve body, a valve clack, a valve cover and a valve rod, wherein the valve cover is fixedly connected to the top of the valve body, the valve rod is installed in the center of the valve cover in a penetrating way, the lower end of the valve rod extends into an inner cavity of the valve body, the valve clack is fixedly connected to the lower end of the valve rod, and a valve seat matched with the valve clack is arranged in the valve body. Further, an annular groove is formed in the sealing surface of the valve clack, and a sealing ring is inlaid in the annular groove and is closely attached to the valve seat ring during sealing. Furthermore, the sealing ring is made of stellite, and the valve seat ring is made of wear-resistant materials. Further, the top of the valve body is provided with an annular positioning groove, the bottom of the annular positioning groove is provided with a middle channel gasket, the lower end of the valve cover is provided with an annular positioning boss matched with the annular positioning groove, and the annular positioning boss is embedded into the annular positioning groove. Further, a packing pressing plate and a packing pressing sleeve are sleeved on the valve rod, the packing pressing plate is connected with the valve cover through bolts, and sealing packing between the valve rod and the valve cover is compacted through the packing pressing sleeve under the packing pressing plate. The utility model has the beneficial effects that: 1. According to the utility model, by improving the valve body structure and installing the replaceable valve seat ring, when the contact surface of the valve seat ring and the valve clack is damaged, the valve seat ring can be replaced in time, so that the stop valve can be quickly maintained, and the maintenance cost is low. 2. The valve seat ring can also be made of wear-resistant materials, so that the service life and the replacement period of the valve seat ring are further prolonged. 3. The utility model can also set up the stellite alloy sealing ring at the contact surface of valve clack and valve seat ring, because stellite alloy material has high hardness and is resistant to scouring, in order to lengthen the life time and replacement cycle of the valve clack. Drawings FIG. 1 is a cross-sectional view of the structure of the present utility model; FIG. 2 is an enlarged view of a portion of FIG. 1; Fig. 3 is a schematic perspective view of the present utility model. The valve body 1, the annular positioning groove 1-1, the middle channel gasket 1-2, the valve clack 2, the annular groove 2-1, the sealing ring 2-2, the valve cover 3, the annular positioning boss 3-1, the valve rod 4, the valve seat 5, the annular shoulder 5-1, the valve seat ring 5-2, the rotary hand wheel 6, the packing pressing plate 7, the bolt 8, the packing pressing sleeve 9 and the sealing packing 10. Detailed Description The utility model will now be described in detail with reference to figures 1-3 and the detailed description. The utility model provides a easy maintenance's high pressure stop valv